1081426 has 4 divisors (see below), whose sum is σ = 1622142. Its totient is φ = 540712.

The previous prime is 1081417. The next prime is 1081429. The reversal of 1081426 is 6241801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1071225 + 10201 = 1035^2 + 101^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1081397 and 1081406.

It is not an unprimeable number, because it can be changed into a prime (1081429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270355 + ... + 270358.

2^1081426 is an apocalyptic number.

1081426 is a deficient number, since it is larger than the sum of its proper divisors (540716).

1081426 is an equidigital number, since it uses as much as digits as its factorization.

1081426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540715.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1081426 is about 1039.9163427892. The cubic root of 1081426 is about 102.6436929724.

The spelling of 1081426 in words is "one million, eighty-one thousand, four hundred twenty-six".